Fadiouth is an artificial island off the coast of Senegal. It’s made almost entirely of clam shells. People living in the area built it over generations of clam harvesting. This was their shell dump. Now it’s large enough to support houses, though it’s most widely known for its Christian cemetery.

Visitors can go there over a 400-meter long wooden bridge. As they walk through the streets and by the graves they can hear and feel the shells crunch beneath their feet.